Device for use in making printing-plates.



G'. R. CORNWALL.

DEVICE FOR USE IN MAKING PRINTING PLATES.

APPLICATION FILED NOV. 30. 1914.

. 1 l 1 242 523. Patented Oct 9, 9 7

Printing is the art 5 Printing is the art preservative. The 7 preservative The conservator. of all conservator of all h arts. It is the 4 teh arts. It is the l/,/ universal educator universal educator and brings thethouglit and brings the thought of one to all who wish 6 of one to all who wish to know or to learn to know or to learn from him. 5 from him.

Printing is the art preservative. The 7 F 5 conservator of all 9 c 7 the arts. It is the universal educator andb sthet t I the arts' It 15 the I of on to all whIl w gi to know or to learn GEORGE It. CORNWALL, 0E RYE, NEW YORK.

DEVICE FOR USE IN MAKING PRINTING-PLATES.

Specification of Letters Patent.

Patented Oct. 9, 191 '7 Application filed November 30, 1914. Serial No. 874,927.

To all whom it may concern:

Be it known that I, GEORGE R. CORNWALL, a citizen of the United States, and a resident of Rye, in the county of Westchester and State of New York, have invented new and useful Improvements in Devices for Use in Making Printing-Plates, of which the following is a specification.

The invention relates to devices employed in rendering manuscripts, or other copy into printing plates for printing, and more especially to a device or instrumentality for making changes,- such as corrections, substitutions, transpositions, additions, and the like in and to the composed matter when it is in the form of print upon a suitable sheet, such as a sheet of paper.

The objects and advantages of the invention will be in part set forth hereinafter and in part will be obvious herefrom, the same being realized or efi'ectuated by the instrumentalities pointed out in the accompanying claims.

The invention consists in the novel articles, combinations, and improvements herein shown and described.

The accompanyin drawings, referred to trate one embodiment of the invention and together with. the description serve to explain the principles thereof.

Of the drawings:

Figure 1 shows a light transmitting sheet carrying typographic or letter press'matter, mounted upon a support, there being an error in one of the lines;

Fig. 2 shows such a sheet mounted upon a light transmitting support, and with the crroneousline cut out but still in place;

Fig. 3 shows a sheet or strip similar to that of Fig. 1 but carrying a single line with the corrected matter;

Fig. 4 is a showing similar to Fig 2 with the correct line substituted in the typographic matter thereon; and i Fig. 5 is an edge view of Fig. 3.

The invention is especially applicable where the manuscript or other copy or the like, is reproduced in printed form, and usually'in justified lines, as an intermediate step in making a printing form or plate, which plate is to be placed upon a printing press and from which the usual relatively large number of printed impressions are made. The matter so printed in the process of securing or producing the printing plate,

when produced in justified lines, may be in page or column form, upon a sheet of paper or other suitable material, or the successive lines may be on separate line strips, which likewise may be arranged in page or column form. In most of the ordinary kinds of work, it is preferable to have a plurality of the lines in column or page form upon a single sheet or strip. Such a form and arrangement of the printed matter may be produced in various ways, a machine capable of producing such matter being shown and described in U. S. Patent No. 921,946, and

another such machine being shown and described in U. S. Patent No. 1,115,472. In the accompanying drawings, illustrating by way of example an embodiment of the invention, a sheet 1 of suitable material, such as a thin, strong, and highly translucent The medium in which the characters are placed or printed upon the sheet or strip 1 may be any suitable ink, and in certain cases I employ an ink which has been sized or otherwise prepared to receive and hold an opaquing material. The printed characters may be rendered opaque by applying thereto a fine powder, such as bronze powder or the like. i

The sheet or strip 1 has applied thereto,

or it is impregnated with, an adhesive medium or agency, which will cause it to adhere to the same or different surfaces of proper character or properties. In certain aspects of the invention, an adhesive medium is employed which will permit of the strip or sheet being repeatedly taken up and put down upon the same or different supporting surfaces. Such adhesive or holding agent willpermit the sheet or strip to be removed from such adhesion or adherent position quickly and easily and without damage to the strip or sheet and leaving the strip or sheet in condition to be again put down, and leaving the support in condition to readily receive the same or a diflerent strip or sheet sheet or strip in condition for reproduction especially in certain aspects of the invention, for reproduction by transmitted light, in the process of making the printing plate. In accordance with one feature of the invention, it has in view the cutting out of a single line or group of lines, and the substitution of other lines or groups of lines in place thereof upon the support, in making corrections and transpositions, or other changes, in getting the composed matter in the ultimate form for printing and preparatory to making the printing plate.

Such an adhesive medium may be made by dissolving beeswax in benzol to a gelatinous consistency although paratlin or other waxes may be used for this purpose if desired. The adhesive agent is applied to the printed sheet or strip in a suitable way,

either by being poured thereover, applied with a brush, or the sheet or strip may be dipped therein, or by filming it on the surface of the support and then pressing the sheet thereon. Such an adhesive is also moisture resisting or non-absorbent of moisture, and its support is likewise moisture resisting and thus the surfaces are kept in uniform condition for repeated removals and readhesions of the sheets or strips upon the support. The nature of the adhesive agent is such as to drive out or exclude the air from beneath, thus making a secure seating for the sheet or strip, which can at the same time be readily removed. Such an adhesive also does not evaporate appreciably and will retain its holding power practically unimpaired for a very long time.

The adhesive agent acts also to make the sheet or strip more highly translucent, and this together with the opaquing of the characters greatly facilitates the 'making of the printing plate, and facilitates also the placing or making up of the pages or columns of the form, and shortens the time of the exposure to the light of the sensitized surface of the plate, as well as having other advantages.

In accordance with certain features of the invention the sheet or strip 1 is mounted upon a suitable support 3 which is adapted to receive and hold firmly adherent upon its surface the sheet 1 while permitting of the ready cutting out, or separation, and removal of a line strip, or of a larger strip or portion and the reattachment of the same, or of another strip in place thereof. In certain aspects of the invention, the support 3 is also of translucent material, and it may be of glass or celluloid, or like material, and it may be either rigid or flexible.

The support 3, in the practical work of composing may be used as a support for a sheet corresponding to a galley or to a page form, and such support serves as a foundation or base to which the various sheets or strips carrying the typographic matter may be attached, and upon and to which they may be transferred, transposed, and otherwise changed. Where the support 3 is translucent, it may also be used in making up the form if desired, and such a use thereof is described in my copending application filed of even date herewith.

As illustrating the use of the invention, and considering the correction of a single line, by way of example, the fourth line upon the sheet 1 in Fig. l is shown with an error therein, as indicated by reference numeral 4, such error consisting in the Word the being incorrectly spelled as teh. In Fig. 2 the sheet 1 is shown upon the support 3, and the line containing the error 4: is shown separated or cut from the remainder of the sheet 1 by incisions 5 and 6. In Fig. 3 is a new or recomposed line 7, mounted on a support 9, corresponding to the cut out line 4, the word the being spelled correctly, as shown at 8, thus eliminating the error previously existing in the line. In Fig. 5 the line 7 is shown with its ends 10 raised from the support 9. It can thus be taken up without affecting the printed line and placed in position in the column or page, as shown in Fig. 1. In Fig. 4, the line 7 is shown in place in the sheet 1, in page or column alinement with other lines on sheet 1, and in justified relation therewith. The adhesive agent employed has permitted the incorrect strip to be removed quickly and readily by merely lifting an end and pulling or stripping it off, and the new strip 7 is put in its place by simply locating it and applying a little pressure.

If these changes, such as that just described are made in the galley proofs, the corrected matter may be taken up and put down again upon corresponding supports 3 for the pages, the matter having been divided up into pages.

By reason of the properties of the adhesive material, the sheet or strip 1, or a plurality of sheets or strips may be successively attached or applied to various or successive supports 3 in shifting about the matter in making corrections or other changes, in making up the form, or in meeting other conditions in preparing the matter to go upon the press. The adhesive and light transmitting property or translucency of the sheets or strips will be practically uniform or unchanged during long periods of time, so that revises and re-revises may be made readily and reliably after the delays common in such work. When the sheets or strips are impregnated with the adhesive or it is applied to both sides thereof, or is applied to the supports, the sheets or strips may be transferred from one support to another, and may have one side on the other turned downwardly as desired. A device for carrying the sheets or strips of any size is shown in my copencling application Ser. No. 874,930, dated I TOVGDQlJGI' 30, 191 1. In

addition to the other advantages, the use of the light transmitting support 3 enables proofs to be taken by the action of light, by contact printing, or otherwise at the various stages of correction, revision and re-revision, and at all times up to the perfection or com- 'pletion of the typographic or composed matter and the making of the plate therefrom. The strips or sheets may be adherent on both sides, and may be used for rights and lefts, as desired, as for example, dependent on whether the printing plate is to print directly on the paper or is to print thereon by ofi'set indirectly.

It will be understood that changes may be made from the form shown and described, within the scope of the accompanying claims, without departing from the principles of the invention, and without sacrificing its chief advantages.

What I claim as my invention and desire to secure by Letters Patent is 1; A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying an adhesive material which is non-absorbent of moisture, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

2. A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying an adhesive material which is substantially non-evaporative, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

3. A typographic letter press composing device comprising a strip having thereon a line of characters, the strip being impregnated with an adhesive material which is substantially non-evaporative, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

4. A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying an adhesive material which is a continuant moisture retainer, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

5. A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying an adhesive material which is a continuant moisture retainer and which is non-absorbent of moisture, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

6. A typographic letter press composing device comprising a strip having thereon a line of characters, and carryin a waxy adhesive material, the strip an the line of characters having opposite properties with respect to the transmission of light there through.

7. A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying a waxy adhesive material which is a continuant moisture retainer, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

8. A typographic letter press composing device comprising a strip having thereon a line of characters, and being impre ated with a waxy adhesive material, which is nonabsorbent of moisture, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

9. A typographic letter press composing device comprising a strip having thereon a line of characters, and being impregnated with a waxy adhesive material which is a continuant moisture retainer, the strip and the line of characters having opposite properties with respect to the transmission of light therethrough.

10. A typographic letter press composing device comprising a strip having thereon a line of characters, and carrying an adhesive comprising a waxy material and a nonaqueous solvent therefor, said strip and the 95 line of characters having opposite properties with respect to the transmission of light therethrough.

11. A typographic letter press composing device comprising a strip having thereon a 100 line of characters, and carrying an adhesive material which is insoluble in water, the strip and the line of characters having opposlte properties with respect to the transmission of light therethrough.

12. A typographic letter character composing device comprising a strip having thereon a line of characters, said line strip carrying an adhesive material comprising parafiin and a solvent therefor, the strip and 110 the line of characters having opposite properties with respect to the transmission of light therethrough.

In testimony whereof, I have signed my name to this specification, in the presence 115 of two subscribing witnesses.

GEORGE R. CORNWALL.

Witnesses:

JOHN D. MORGAN, LOUISA LOEHR. 

